Aulacoseira huguang sp.

IF 1 4区生物学 Q3 PLANT SCIENCES

Phytotaxa Pub Date : 2023-12-07 DOI:10.11646/phytotaxa.629.3.4

Wenyu He, P. Rioual, Hai Luo, Jingjing Li, Luo Wang

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引用次数: 0

摘要

对中国东南部湖光岩麻尔湖(HML)沉积物序列的研究表明，在冰川期样品中发现了一种新的冰藻属物种。利用光镜和扫描电镜技术，将该小型物种描述为Aulacoseira huguang sp. 11 .，并与A. subborealis (Nygaard) Denys, Muylaert & Krammer, A. pusilla (F. Meister) Tuji & Houki, A. stevensiae Weide, A. subarctica (O. m ller)等相似物种的形态进行了比较。Haworth, A. scalaris(格鲁诺在范启克)Houk, Klee & Passauer, A. distans (Ehrenberg) Simonsen和A. alpigena(格鲁诺)Krammer。湖广白骨藻可通过以下特征组合加以区分:瓣面被均匀分布的圆形乳晕覆盖，柱光滑，细胞大小小，位于环纹上的两个环孔，位于瓣周相对位置，刺与第一排乳晕分开。

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Aulacoseira huguang sp. nov., a new Lateglacial fossil diatom from South China

Examination of a sediment sequence from Huguangyan Maar Lake (HML) in southeast China revealed the presence of a new Aulacoseira species in samples dated to the Lateglacial. Using light microscopy (LM) and scanning electron microscopy (SEM), this small-sized species is described as Aulacoseira huguang sp. nov. Its morphology is compared with those of similar species, such as A. subborealis (Nygaard) Denys, Muylaert & Krammer, A. pusilla (F. Meister) Tuji & Houki, A. stevensiae Weide, A. subarctica (O. Müller.) Haworth, A. scalaris (Grunow in Van Heurck) Houk, Klee & Passauer, A. distans (Ehrenberg) Simonsen and A. alpigena (Grunow) Krammer. Aulacoseira huguang sp. nov. can be differentiated by the following combination of characters: valve face covered in round areolae evenly spaced, a smooth collum, small cell size, the presence of two rimoportulae located on the ringleist, positioned in opposite places on the perimeter of the valve and spines that are separated from the first row of areolae.

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来源期刊

Phytotaxa PLANT SCIENCES-

CiteScore

1.90

自引率

27.30%

发文量

956

审稿时长

1 months

期刊介绍： Phytotaxa is a peer-reviewed, international journal for rapid publication of high quality papers on any aspect of systematic and taxonomic botany, with a preference for large taxonomic works such as monographs, floras, revisions and evolutionary studies and descriptions of new taxa. Phytotaxa covers all groups covered by the International Code of Nomenclature foralgae, fungi, and plants ICNafp (fungi, lichens, algae, diatoms, mosses, liverworts, hornworts, and vascular plants), both living and fossil. Phytotaxa was founded in 2009 as botanical sister journal to Zootaxa. It has a large editorial board, who are running this journal on a voluntary basis, and it is published by Magnolia Press (Auckland , New Zealand). It is also indexed by SCIE, JCR and Biosis. All types of taxonomic, floristic and phytogeographic papers are considered, including theoretical papers and methodology, systematics and phylogeny, monographs, revisions and reviews, catalogues, biographies and bibliographies, history of botanical explorations, identification guides, floras, analyses of characters, phylogenetic studies and phytogeography, descriptions of taxa, typification and nomenclatural papers. Monographs and other long manuscripts (of 60 printed pages or more) can be published as books, which will receive an ISBN number as well as being part of the Phytotaxa series.